Daflog logo

ACTIVITIES 

measurements 

unit cabins 

our staff 

well-site 


 MEASUREMENTS MADE WITH LOGGING UNIT

   The monitoring of geological and drilling parameters, of the drilling fluid, of the oil and gas as well as of the harm gases and pumps is made according to the tables below:

geological data

Parameter Data acquisition Source Registered in
logs
automatic manual
Rock type   bifa microscope bifa
Estimated percentage of each type of rock   bifa microscope bifa
Color   bifa microscope bifa
Hardness / Fissility   bifa microscope bifa
Texture   bifa microscope bifa
Visual porosity   bifa microscope bifa
Mineral accessories / Fossiles   bifa microscope bifa
Indications of hydrocarbons   bifa microscope bifa
Calcite bifa   calcimeter bifa
Dolomite bifa   calcimeter bifa
Fluorescence   bifa UV lamp bifa
Core recovered / not recovered   bifa   bifa

Drilling parameters ˆupˆ

Parameter Data acquisition Source Registered in
logs
automatic manual
Date bifa   computer bifa
Time bifa   computer  
BHA and pipe assembly   bifa    
Depth bifa   calculated bifa
Rate of penetration bifa   calculated bifa
Advancement speed bifa   calculated  
Bit position bifa   calculated  
Bit hours bifa   calculated bifa
Hook load bifa   sensor drilling log
Weight on bit bifa   calculated bifa
RPM Rotary or Top Drive bifa   sensor drilling log
RPM turbine   bifa calculated drilling log
Torque bifa   sensor drilling log
Cement plug   bifa   bifa
Casing shoe   bifa   bifa

Drilling mud parameters ˆupˆ

Parameter Data acquisition Source Registered in
logs
automatic manual
Temperature in bifa   sensor  
Temperature out bifa   sensor  
Conductivity in bifa   sensor  
Conductivity out bifa   sensor  
Density in / out   bifa mud engineer bifa
Marsh viscosity   bifa mud engineer bifa
Mud gel strength   bifa mud engineer bifa
Plastic viscosity   bifa mud engineer bifa
Yield point   bifa mud engineer bifa
Filtrate   bifa mud engineer bifa
Mud cake   bifa mud engineer bifa
pH   bifa mud engineer bifa
Salt content   bifa mud engineer bifa

Pumps and tanks parameters ˆupˆ

Parameter Data acquisition Source Registered in
logs
automatic manual
Active tank bifa   sensor  
Reserve tank bifa   sensor  
Trip tank bifa   sensor  
Total tank bifa   calculated  
Standpipe pressure bifa   sensor drilling log
Pump strokes bifa   sensor  
Fluid flow rate bifa   calculated  
Lag time bifa   calculated  
Fluids influx   bifa calculated bifa

Hydrocarbons and harmful gases ˆupˆ

Parameter Data acquisition Source Registered in
logs
automatic manual
Gas chromatograph (C1÷C5) bifa   FID bifa
Total gas bifa   FID bifa
Hydrogen sulphide bifa   sensor  
Carbon dioxide bifa   sensor  
Flammable Gas bifa   sensor  

Geophysical data ˆupˆ

Parameter Data acquisition Source Registered in
logs
automatic manual
Natural gamma ray   bifa MWD / WLL bifa
Resistivity   bifa MWD / WLL  
Density   bifa MWD / WLL  
Inclination   bifa totco / WLL bifa
Azimuth   bifa totco / WLL bifa
Vertical depth   bifa calculated bifa